Big bore or power up?

[250Renvy]

If I go to a big bore on a 250X - how big can you go without sacrificing reliability?

What are some easy power ups?

How much extra power would a cam, valves and pipe add?

Do people get port work done to 4-strokes?

I know I probably should have done a search, but I don't know what to search for!

[born2ride14]

get a 350x motor

[2muchquad]

or a 330 kit with a exhaust system.that'll do what your trying to do;)

[elementryder]

ok you should get the 12.2mm stroker from powroll and a 330 kitfrom any body....that will put you at 350cc and still be reliable...next give TC racing a call and get a cam,port job,oversized valves,hardend rocker arms,and hd valve springs...also when you call TC get a lectron carb and an exaust.......all this and it should MOVE